21112220020202 has 96 divisors (see below), whose sum is σ = 35266632612480. Its totient is φ = 9428376657920.

The previous prime is 21112220020169. The next prime is 21112220020267. The reversal of 21112220020202 is 20202002221112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21742759577 + ... + 21742760547.

It is an arithmetic number, because the mean of its divisors is an integer number (367360756380).

Almost surely, 2^{21112220020202} is an apocalyptic number.

21112220020202 is a deficient number, since it is larger than the sum of its proper divisors (14154412592278).

21112220020202 is a wasteful number, since it uses less digits than its factorization.

21112220020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21112220020202 its reverse (20202002221112), we get a palindrome (41314222241314).

The spelling of 21112220020202 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty million, twenty thousand, two hundred two".